Daily Report for 9th October 2017

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.9 °C (-0.4) 00:10 10.0 °C (+0.3) 14.4 °C (+5.1), 2010 4.7 °C (-4.6), 2022
Maximum Temperature 16.7 °C (+0.9) 12:39 16.3 °C (+0.1) 23.5 °C (+7.7), 2023 13.3 °C (-2.5), 2012
Mean Temperature 13.3 °C (+0.2) 13.3 °C (+0.2) 17.8 °C, 2023 9.2 °C, 2020
Minimum Humidity 76% 15:36 63% 81%, 2024 53%, 2014
Maximum Humidity 95% 02:11 89% 98%, 2012 80%, 2016
Mean Humidity 84% 78% 90%, 2024 73%, 2016
Minimum Pressure 1017 hPa 20:15 1015 hPa 1028 hPa, 2021 987 hPa, 2024
Maximum Pressure 1021 hPa 01:45 1022 hPa 1030 hPa, 2021 993 hPa, 2024
Mean Pressure 1019 hPa 1019 hPa 1029 hPa, 2021 988 hPa, 2024
Mean Wind Speed 3.1 mph (-1.0) 5.6 mph (+1.5) 8.1 mph, 2014 0.2 mph, 2021
Maximum Wind Speed 10.3 mph 13:19 13.6 mph 21.0 mph, 2014 4.4 mph, 2021
Maximum Gust 15.0 mph 13:08 21.2 mph 29.1 mph, 2014 6.8 mph, 2021
Mean Wind Direction WSW
Rainfall 0.0 mm 1.6 mm (8%) 2.8 mm, 2014
Maximum Hourly Rain n/a 2.3, 2014
Maximum 10-min Rain n/a 1.8, 2016
Maximum Rain Rate n/a 48, 2014
Minimum Dew Point 7.8 °C 00:07 7.1 °C 12.2 °C, 2023 2.2 °C, 2013
Maximum Dew Point 13.0 °C 14:16 11.8 °C 17.7 °C, 2023 8.2 °C, 2016
Mean Dew Point 10.6 °C 9.4 °C 14.5 °C, 2023 6.5 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.9 °C 00:10 10.6 °C 14.8 °C, 2010 4.7 °C, 2022
Day Maximum (09-21) 16.7 °C 12:39 16.3 °C 23.5 °C, 2023 13.3 °C, 2012
Max 10m Temp Rise 0.5 °C 12:27 0.5 °C 0.9 °C, 2022 0.2 °C, 2010
Max 1hr Temp Rise 1.4 °C 10:50 1.6 °C 4.0 °C, 2022 0.6 °C, 2010
Max 1hr Hum Rise 5% 13:47 7% 14%, 2014 2%, 2010
Max 10m Temp Fall 0.3 °C 13:52 0.5 °C 0.7 °C, 2023 0.3 °C, 2010
Max 1hr Temp Fall 0.8 °C 17:48 1.4 °C 3.2 °C, 2023 0.8 °C, 2017
Max 1hr Hum Fall 7% 11:39 9% 19%, 2022 4%, 2010
Max 10m Wind Speed 7.2 mph 13:21 10.1 mph 15.7 mph, 2014 2.0 mph, 2021
Minimum Feels-like 8.5 °C 00:20 9.3 °C 16.8 °C, 2010 3.9 °C, 2009
Maximum Feels-like 19.3 °C 12:32 18.2 °C 29.3 °C, 2023 14.0 °C, 2012
Mean Feels-like 14.8 °C 14.3 °C 21.5 °C, 2023 9.1 °C, 2020
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.8 °C (+1.4) 6.3 °C (-0.2) 12.9 °C (+6.5), 2022 2.7 °C (-3.7), 2010
Humidity Range 19% 26% 45%, 2022 13%, 2024
Pressure Range 4 hPa 7 hPa 13 hPa, 2022 2 hPa, 2015
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.5 [5%]33 hrs (89%) [36%] 10 [100%], 2018 0.2 [2%], 2010
Wet Hours 02.5 hrs (18%) [1.2%] 5, 2011 0, 2010
Cloud Cover Mostly Cloudy or Overcast
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 9th October 2017.
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs are derived based on analysis of webcam observations, but may use data from our closest site, Heathrow, when needed.
Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually.
Rainfall totals may be manually adjusted after the fact to correct delayed or erroneous data.
Cloud cover and Events are manually reported, often with multi-week delays.
Data is generally reliable and accurate but should always be viewed with some quantity of salt to hand.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose